Sheet-interfolding machine



W. H. C'ANNARD ET AL Nav; "T7," T925 SHEET INTERFOLDING MACHINE i Filed Sept. .29

Y llIllllllllll/ Z-nvena r6:

Nove 3.7, 39125. i

W. H. CANNARD Er AL SHEET INTERFOLDING b MACHINE Filed sept. 29, 1921 Y S'sneeiS-sheet 25g/a. f '0, l ,A

Nov. 17, l925- W. H. CANNARD ET AL' SHEET INTERFOLDING MACHINE 5 Sheets-Sheet 5 Filed Sept. 29, 1921 Nov. 17Y 1925.

W` H. CANNARD ET AL SHEET INTERFOLDING MACHINE Filed Sept. 29, 1921 5 Sheets-Sheet 4 Jverw and. G; Jawn v l Nev. 17, 1925 561,907

' w. H. CANNARD ET AL SHEET INTRFOLDING MACHINE Filed Sept. 29, 1921 5 Sheets-Sheet 5 Men/92's:

esente; not. i?, ieee.

entre s'rrss rA'reN'r istie? Fries,

WILLIM H. CANNRID AND GLENN A. SHAFFER, OF GREEN BAY, WISCONSIN, ATS- SIGNORS TO SAID CANNARD.

SHEET-INTERFOLDING MACHNE.

Application filed-September 29, 192i. Serial No. 504,023.

vthe character specified, which will take material in 'sheets from a source of supply, cut, told, interold a portion of one sheet within a--portion of anothencount the-number of sheets so interfolded, deliver them in compact form, and oifset a portion of the delivered product When a predetermined number of sheets have been :passed out.

Another object oi ize the action of rotating members in the accomplishment of these ends, whereby recip-A rocating parts are eliminated, thus speeding `up the production considerably and eliminating wear and vibration. v y

Other objects and advantages will in part be apparent, and in part be brought out more ,fully the description which follows.

Drawings illustrating a preferred embodiment of the invention are hereto annexed, and in which:

Fig. 1 is a View in side elevation, certain portions being in section and showing one embodiment of the various components in a complete machine;

Fig. Zis a diagrammatic view in vertical section showing` the various steps of cutting, folding, interfolding4 and delivery, and the positions of certain components during this cycle of operations;

Fig. 3 is a view in through one of the rotary cylinders, on the -I Iline .3A-r3 of Fig. 4;.

Figs. i and 5 are views in vertical section 1 through one, of these cylinders on lines 4-4 of Fig. e;

and 5v5, respectively,

Fig'. 6 is a view in side elevation of one of ing cylinders and illustrating its connection with asource of rotary movcnient; i

Vig. 7

a-, is 'detail view in cross section through one of the pinch-rolls, and showing longitudinal section' manner of mounting the movable pinehar. i In these views, l designates a frame Work comprising uprights and cross-pieces constituting a support for the working parts of the machine. Journaled in suitable bearings in its upper portion are `.shafts 2, carrying guide-rolls 3, adapted to lead webs of material from a sourceI of supply, such as stockrolls Lishown inFig. 2.

Between these rolls there is mounted a guide oi' separator 5, having a. knife-edge close to the bight of the rolls and adapted to guide webs of material fed from opposite sides of the guide-rolls, singly and in separated arrangement, to opposite sides of a cutter-bar 6. This is suitably mounted in the fraineworlrbelow the guide or separa-`r tor 5.

The lower edges ot thecutter-bar are serrated, as at 7, and coact with similarlyformed blades 8, disposed on rolls 9. These rolls are carried' on shafts 10 journaled suitably on the-framework, and are placed directly in the line of travel of the web as it passes through the guide-rolls.

The knives are disposed upon the rolls in such a Way that theywill come into alternate engagement with thecutter-bar, and the two sets of rolls are connected together by suitable gearing (not shown) and which in turn is in driving connection lwith :i source of rotary movement which will be later described.

From the cutter-rolls, the material passes to a folding and intert'olding instrumentality which will now be described: This includes reacting cylinders or drums 11, mounted for rotation on shafts 12 suitably journaled in the framework. These drums are driven in opposite directions through gearing 13, in' mesh with a. pinion 14 on a shaft 15 which l constitutes the main-drive shaft of the machine.

Each drum or cylinder has end-portions 1G connected by brace-members 1T and bolts or the like li", spaced apart around the cirf oumference of theend-poit`ons, and between which there is mountel eo as to be effective n such 'that a. tricher-roll on one drum will coact with a set of pinch or folding rolls on the v other drum at a predetermined time, the accuracy of which is assured by a suitable strumentality, such as v'gearing herey shown. The arrangement of 'the gearing Will be best seen with reference to Fig. 4: Each drum-shaft isv stationary, that is, it is mounted securely against rotation in the casing of the machine.' At one/end of the drum-shaft there is secured (esa part of the shaft) a-pinion 20. This in mesh with a series of idler-gears 2l, suitably mounted for rotation on the end-portion of each drum. in mesh with the teeth of these idler-gears are pinions '9.2. carried by each .tricher-roll, and' the ai ilgement is such that a protruding nicher-member Q3, eigtending outwardlly along the length' of the roll, will always vmaintain a horizontal position aud point and extend between the biht or" the pinch or folder rolls when these two instrumentalities come into coactive engagement atthe center-line` of the drums, es shown in Fig. 2. This horizon-,tal ement is effected by timing, making the pinion on the drum-shaft 12 of the same ratio as the ginion 22 on the tucker-roll; and, in this way, the tricher-roll will maintaf i a fixed, deiinite and unchanging Position with relation to the drum-axle', no nui-toter what the rotation or" the drum itself may be. These drums are mounted for rotative movement on their respective sh ats in sui-table anti-friction bearings 22, the drums being driven stated above.

`llach set of pinch-rolls comprises two rolls, mounted loosely in the ends of the drums. 'One of these rolls carries along its outer edge a projecting portion 2i, extending along Ythe outertace of the roll and .opted to coact with s pinch-bar 25, 'muted similarly on the other roll of each liar 24 is usually fixed with relato the roll, while bar 25 is springto .allow 'for various sizes of mateand to eid in etecting release. Toper- 'mieiit of bar it is mounted in longitudinally in 'which it has a slid,- ained therein as by through the. bar and y of the roll. 'A space 'ovided in the roll extending around ws 25" and constitutes housing iring 25". This spring bears at one point against a portion of the roll and at another against the movable pinch-bar, holding "i of its outward move- A bhein-nut y screw 125% in screw 25 in adjusted pos Refs ring to el' these :inch-relu.

l 5, the action of ribed: These --ils are given an iniziV position in the um equivalent to that shown in Fig. 2, here the set of pinch-rolls is shown in coaction with a tucker-bar at the horizontal center-line of the drums. The' end of 4each roll carries,'and has fixed thereto, a pinion 25', which is fixed in Vratio to the pinion 20, carried by ythe drum shaft 12. The pinion on the roll which carries the fixed pinolibar is in mesh with 'an idler 2l, Whilethe Vpinion on the roll having the movable bar isin mesh with the pinion carried by its coacting pinch-roll. The effect of thisarrangement is to maintain the rollv having the fixed-bar 2e in-unchanging relation to the 'drum shaft Z' and insure the barI 24 being always in its initial position when it comes to the horizontal center-line of the drum. The rol-l carrying the movable pinch-bar will make one revolution to each revolution. of the drum, but' is timed to be always rin its proprtposition to coact with lthe other roll and tricher-bar when they come vtogether at the central or folding position', as shown in Fig. 2. In other words, the timing' is such that both pinch-'bars coact to take the portion of the web Ipresented to them by the faucher-bary when these instrumentalities. comeV together at the horizontal center-'lineof'the drums'. As 'soon as this has been effected, the pinch-roll having l the movablepinch-bar will rotate on its axis to eect a release ofA the gripped 'web l at a point about sixty degrees (60) below y the initial point of gripping. 4

Means are provided for assisting in the release of the. webfrom the pinch-rolls; and., to this end, there are 'mounted on shafts 26,' set in the framework on a line about where the web is released from the pinch-rolls on each drum, brushes 27. These receive a rotative movement through a belt driven from a pinion'Qt, secured to the drive-shaft l5, the belt being carried Wound an idler 29, and over one and under a3 i pinion 30 mounted on the shafts 26'car ing the brushes. Clockwise rotation et. drive-shaft 15 willfcause the brushes to ro tate inwardl)T toward Veach other to brush the edge o te foldedweb as it leaves the mounted on the ends of shafts 37 extending across the machine in the path ot' travel of the mterfolded. sheets as they leave the brushes. There are cams 38 4mounted on I y meteor these shafts, and the arrangement is such that, after a predetermined number of sheets have passed through the drums, the cams are rotated to pushfa portion of the folded sheets out of alinement with the rest. As this mechanism is to be the subject-matter ol a separate application, it is only referred to generally here. n

. Fromr the Ceulaer-cams, the sheetsfpass along ways '39 or the like, to a conveyor Ll() driven from one of the sprockets 51o'. o v AS the webs are out valternately,.the cutting-is timed so that the out edge vof one web willA be Aplaced about oeyntrallybetween the two edges of the sheet out from the op-` posite web, and the arrangement of the folding-drums and the instrumentalitiee they carry is such that the pusher-bar Will push the iciee'edge of one sheetinto the central portion of the other sheet, Willbe understood. y y

`Vvhile theinvention has beendiselosed iJ the embodiment her shown, it is under# stood that various changes in structure and. arrangement,

.of -tlie inyention,iiow to be set forth irr'cl aims. What We claim ist 1. Aeheet intertoldiiiginachine comprising a plurality of coacting drums, leach drum being rotatable Yand having thereon pinch rolls and' a pusher in alternate ar-Ff rangement, one of the pinch rolls being ro-v tatable and making a revolution toeaeh reviolutio'n of the'druin which carries it; and means vfor rotating the drums whereby a pusheronA one drum Will 'alwaysroact with the pinch rolls on the other drum, .theseA members being brought into operative rela` tionship by rotation of the driiiiiis. 2. Asheet-intert'oldiiig machineincludingr a drum; :i folding instrumentality arranged uponthe drum comprising a pii'ieh-roll having a movable pinch-bar and a'pinoh-roll having a fixed bar thereon. l f,

3. A sheetitertolding inaelinie including a drum; a folding instrumentalityarranged upon the druni eonii'irising :t pinoli-roll hav- V ,ing a ii'iovable pinch-bai.' 'and va pinoli-'roll having a lined bar thereon; and-iaipuslierelement disposedv upon the druniff f v ing` a plurality ol" rotatable drums; sheetiipon. oaeli druin and lComprieilig .a pair ol' eoaotingV `:oiated/vvith operating intiined re to the rotation ol thedtuins. r

vone having a one drum` into'f e'oaetii and mechanical equivalentsf 'intertoldrng @are contemplated. as beingwithin the scope -pinions carried `by thei nel) ing a yplurality -of'rotatable'fdruins "hootdrinn`l 'and piiiiol'i-rolls, one having alined and one having-'minorable pinch-bar thereon gia pusher insti-unien-u tality: adapted to present -afw'eb of ii'ateii'iil to the'lbight" ot'the pinch-rollf; `in ins bringing thev pusher instrumentality oir yone interfolding. 'means upon:v each drum linto eoaotive'rel-ation` with the, intein- Afolding Ameanszupolnthe other A 'pre(leteiinined"Upoiii't inv the rotation ot-'tlio drums g' and fai eiitting-instrumentalit o- "6, A sheetlinterlolding machine compris:- inga plurality of rotatable `dri`ims;sheetinterfolding ineans upon eaeli drinn and comprising a .pairfol4 coaotiiigy 'pinch-rolls,

` lined-and lone 'having a niorable pinoli-bar thereon; a pusher instrumentality adapted to' present a webfoi'inaterialtothebight i *hepiiieh-roll n tor bringingthe/p` inlf-:triiinental relitti on" ivi th `inea-ills il le v4other edpoi'nt injthe vretationf. o =.i=he

a predote'rni 'ation drums; a outting-instrumentalfity a eo@iii-ted?`r with, and operatiiigf'intii'i'ieiil relation to ,the rotation"v ofthe drums `and 'teeding-ineelianisinv assooiatedvith the cutting' instru- "rnentality Y 'Y y 7.A sheet-interfolding machine comprising a plurality o'lirotatable"drums; sheetinterfolding means "uponfeaeh drumv and comprising 'a' pair of eoacting'i-piiirh-rolls,

oiie'ihavinp,` a fixed and onehavinganiorable pinch-bar l`thereon; pusher' :instru-1.

mentality adapted tojpresentza web of mate-v rial to the bight otfthepinch-rolls;.means .for bring-ing'` the fpufsl 1er finstrurnentalityv,.on` one drumintoeoaetive relation witl` vthe interfeldingmeans upoii'the other drinn at a predetermined' point drinne; and a oounting-.ineohanisin associated With the'driims and 'adapted `to count the material interfolded thereby.-

8. A sheet inter'loldin machineV oom rising 'juxtaposed drums; shafts inv de lifnite` predetermined relation to ,the druinsand upon whiohytlie drums' are rotatable; yapinionon` eaohshaft; a folding instrumentality 'including pinchirolls anda pusher, inalternate arrangement, 'disposed' oneaoh-fflrnm;

s 'rollsvand'. ,pushers; gearing,` .connecting shatts whereby. the

and means, ,Compri 'sin the pinions and drum pusher on loii'e drum will alwaysY begoper-,l `f-'itively present rolls oniaji are rotated. y f l?. A sheet ifiil'erio maohinewcfomprisruins; shafts in dolnito ation to the drums and are rota ble; a pini., instrumentality ingV juxtaposed' d predetermined upon Whiei the ii ion on. each shalt, a

. iii the rotation ,ot the'.

including pinch rollsv and a pusher, in alternate arrangement', disposed. on each drum; pinions carried by these rolls vand pushers; means, comprising gearing, con: necting the pinions and' drum shafts, whereby the pusher on one drum will always be operatively presented to the bight of the pinch rolls on a` juxtaposed drum, when the drums are rotated; said pinch rolls including a fixed and a movablemember; and theion on each shaft; a folding instrumentality including pinoli rolls and a pusher, inalternate arrangement, disposed on each drum; pinions carried by theserolls and pusher-s; means, comprising gearing, connecting the pinions and drum shafts, whereby the pusher on one drum will always be operatively presented to the bight ot the pinch rolls on a juxtaposed drum, when the drums are rotated; said `pinch rolls including a fixed and a movable member; gearing connecting the rolls and shaftbeing arranged always to maintain one member in a predetermined position-with relation toits drum shaft, and to rotate the other member; and gearing connecting the drum shafts, whereby the pusher onl one drum will .always bear a fixed relation to thedrum shaft upon which it isjnounted, and operatively present itself' to the rolls Ain the other drum at a fixed point in the rotation of the drums.

11. A sheet-interfolding mechanism .in-

cluding a drum; a shaft in fixed relationto the drum aud upon which the drum is rotatable; apinch-roll mountedv Vupon the drum; a pinion carried 'by the drum-shaft; a pii'iion carried by the pinch-roll; and means, including gearing, for maintaining the pinch-roll in 'fixed position during any point in the rotation of the drum.

12. A sheet-'nterfolding mechanism including a drum; a shaft in fixed position with relativL to the drum and upon which the drum is `fotatable; a pinch-roll carried by the drum; a pinch-bar mounted on the pinch-roll; a pinion disposed upon the drum-shaft; a pinion on the pinch-roll; and

means, including gearing, connecting thesepinions, whereby the pinch-bar on the pinch-roll will always maintain its initial osition. at any point in the rotation or" the 13. A Sheet-interfolding mechanism including a drum; a plurality of coacting interfolding rolls mounted on the drum; a fixed pinch-bar carried by one roll; a movable pinch-.bar carried by the other and adapted to coact with the fixed pinch-bar; a shaft in fixed relation to the drum and upon which the drum is rotatable; a pinion on the drum-shaft; a pinion on each coactingf-interf'olding roll, said' latter pinions being-in mesh; and means including gearing for causing rotation of one of, the rolls.

14. A sheet-interfolding mechanism including 'a drum; a plurality of coacting inter-folding rolls mounted on the drum; a fixed pinch-bar carried by one roll; a movableA pinch-bar carried by the other and adapted to coact with the fixed pinch-bar; a shaft in fixed relation to the drum and upon which the drum is rotatable; a pinion on 4the drum-shaft; a pinion on each coacting interfolding roll, said latter pinions being in mesh; means including gearing for causing rotation of one of the rolls; and means for causing an interaction between the pinch-bars at a predetermined point in the rotation of the drum,

15."A sheet-intert'olding mechanism including a drum; a plurality of coacting interfolding-r011s mounted on the drum; a fixed'pinch-bar carried by one roll; a movable pinch-bar carried by the other and adapted to coact with the fixed pinch-bar;- a shaft in fixed relation to ,the drum and upon which the 'drum is rotatable; a pinion on the drum-f7 ift; a iliii'on on each eoacting interfoldiirU roll, saro. latter pinions being in mesh; nrans inch-ding gearing for causing rotation ot one or the rolls and Iieans, including gearing, t'or maintaining one of the bars in fixed position at any point in the rotation of the drum 'and causing the other to rotate.

16. A sheet-interfold'ing mechanism including a drum; a plurality of coacting intel-folding rolls mounted on the drum; a tixed'pinch-bar carried by one roll; a movable pinch-bar carried by the other and adapted to coact with the fixed'pinoh-bar; a

vshaft in fixed relation to the drum and upon which the drum is rotatable; a pinion on the' drum-shaft; a pinion on each eoacting interfolding roll, said latter pinions being in mesh; means including gearing for causing rotation of one of the rolls; and means, including gearing, for maintaining one of the bars in fixed position at any point inthe rotation ot' the drum and causing the other to rotate and come into cooperative engagement with the other pinch-bar at a set point in the rotation of the drum.

17. A sheet interfolding mechanism including rotatable drums; sheet folding rolls and a pusher disposed in alternate arrangement on each drum; means for effecting eoaction between a pusher on one drum and sheet folding rolls on another drum at a predetermined point during the rotation of the drums; and means for maintaining the pushers in the position they occupy when eoaetingr with jthe sheet-folding rolls, unchanged by the rotation of the drums.

18. A sheet interfolding mechanism including rotatable drums; sheet folding rolls and a pusher disposed in alternate arrangement on each drum; means for effecting coaction between a pusher on one drum and sheet foldingl rolls onv another drum at a certain point in the rotation of the drums, one of the folding rolls being rotatable and rotating at least once to each revolution of the drum which carries it; and means for maintaining a pusher in definite position with relation to the sheet folding rolls at any point`in the rot/ation of the drums.

19. A sheet interfolding mechanism including rotatable drums; sheet folding rolls and a pusher disposed in alternate arrangement on each drum; means for effecting coaction between a pusher on one drum and sheet folding rolls on another drum at a certain point in the rotation of the drums one ofthe sheet folding rolls and the pushers being always maintained in a ixed predetermined position, unchanged by the rdt ation ofthe drum; and means for cutting.

material from a web `for presentation to the drums.

` 20. A sheet interfolding mechanism including rotatable drums; sheet foiding rolls and a pusher disposed in alternate arrangement on each drum; means for effecting eoaction' between a pusher on one drum and sheet folding rolls on anothe; drum at a certain point in the rotation of 'the drums one of the sheet folding rolls and the pushers being always maintained in a ixed predetermined position, unchanged by the' rotation of the drum; and means for removing the inter-folded material from the drums.

2l. A sheet-interfolding machine comprising a plurality of rotatable drums;' sheetinterfolding. rolls carriedr by each drum`; pusher-rolls carried by each drum; pinoliba-rs disposed upon the interfolding-rolls; a pusher-bar on each pusher-roll; a shaft in fixed relation to each drum and upon Awhich each drum rotates; a pinion on each shaft; a pinion on each pusher-roll; intermeshed pinions on the interfolding-rolls; and means, for maintaining the pusher-bars on one drum in a position always te coact with interfolding-rolls on the other drum at a predetermined point in 'the rotation of the drums.

` 22. A sheet-interfolding machine comprising a plurality of'rota-table drums; sheetinlerfolding rolls carried by eaeh drum; pusher-rolls carried by each drum; pinchbars disposed upon the interfolding rolls; a pusher-bar on each pusher-roll; a shaft in fixed relation to each drum and upon which each drum rotates; a pinion on each shaft; apinio'n on eachpusher-roll; interanisin` associated ther Y meslied pinions on the interfolding-rolls; mean-r, including gea-ring, for `maintaining the pusher-bars on one drum in a position always to coact u'ithyinterfolding-rolls von the other drumat a predetermined point in the rotation of the drums; and means including gearing, for causing a rotation. one interfolding-roll with relation to the otherfduring 'the rotation of the drum.

223. Asheet-interfolding machine compris- 7D ing a plurality `of rotatable drums: sheet-` interfolding rolls carried by each drum; pusher-rolls carried by :each drinn; pinchy bars disposed 'upon the'interfolding rolls; n Aa pusher-bar on each pusher-roll; .a 'shaf in fixed relation 'to each drum and up'o'nI which each drinn rotates; 'a' pinion you Ieach shaft; a pinion onv each pusher-roll;inter-l meshed pinions on the interfoldingrolls; means, including gearing, for n'iaintainingV85 f the pusher-bars .on one drum in a position always ito coact with interfolding-rolls onl the other drinn at a predetermined point in the rotation of the drums; and i,neagns including gearin', forv maintaining the' pinch-bar on one roll in tixed position atany point in the rotation ofthe drums.

24. A sheet-nterfolding machine compris-` ing a plurality of rotatable drums; sheetinterfolding ,rolls carried by each drum; pusher-rolls-carried by each drum; pinchbars disposednpon vthe interfolding rolls; a pusher-bar on. each pusher-roll; a shattl `in fixed relationyto each drun'r and uponl Whicheaeh drum rotates; aI pinionfon each shaft; a. pinion on each pusher-roll-g'internieshed pinions on the interfolding-rolls.; means, including gearing, for vmaintaini Kg the pusher-bars on one drum in a position 'always to eoact with interfolding-rolls.on the other drum at a predetermined pointin the rotation of the drums: and means, including gearing. 'for maintainii'ig the pinolibar on one roll in lixed position at any point in the rotation of the drums and for causing interaction between both pinch-bars al' the point where the pusher-bar and intert'olding-rolls coact.

A sheet-interfoldingmachine comprising a plurality of rotatable drums; sheet-- interfolding rolls carried ,by each pusher-rolls Acarried by each drum' bars disposed upon the interfolding-rolls; a pusher-bar onI each pusher-roll; a` shaft in lit-:ed relation to each drum and, upei'i which each drum aotates; `a pinion on each shaft: a pinionf-infeaeh*pusher-roll; intermeshed pinionsa-on.y the interfolding-rolls; means` including gearing, for'maintaining thel'iusher-bars on one drum in a position `aliyays to eoaet With interfolding-rolls onthe other drum ata predetermined pointfinfthe rotation of the drumsg.cutter-mechanism associated with the drums;l wanting-mech.-

'lth als@ @ntl .msi-m for driving all of these mechanisms in synchronism.

26. A sheet-interfolding machine including a drum; a folding instrumentality arranged thereon and comprising pinch-rolls; and a y'eldably mounted pinch-bar associated with said rolls.

27. A sheet-interfolding machine comprising a plurality of rotatable drums; sheetinterfolding means upon each drum and` comprising coacting pinch-rolls; a yieldably mounted pinch-bar associated with said rolls; a pusher instrumentality adapted to present a web of material to the bight of the pinch-rolls; and means for bringing the pusher instrumentality on one drum into coactive relation with the interfolding means upon the other drum at a predetermined point in the rotation of the drumsv 28. A sheet-interfolding mechanism including a drum; a plurality of interfolding rolls mounted on the drum; a yieldably mounted pinch-bar associated With the rolls; .a shaft in fixed relation ti he drum and upon which the drum is rot; on the drum-shaft; a pinion on each interfolding roll, said pinions being in mesh; and means including gearing for causing rotation of one of the rolls.

29. A sheet interfolding instrumentality comprising a fixed shaft; a pinion on the shaft; a drum rotatably mounted on the shaft; a plurality of coacting interfolding rolls, arranged in pairs around the drum;

gearing connecting the rolls of each pair;

and a plurality of gears of equal dimensions connecting the'pinion on the drum shaft with one of the gears on the-rolls, there being one connecting gear for each set of rolls. 30. A sheet interfolding instrumentality comprising a fixed shaft; a pinion on the shaft; a drum rotatably mounted on the shaft; a. plurality of coacting interfolding rolls, arranged in pairs around the drum; gearing connecting the rolls of each pair; a plurality of gears .of equal dimensions connecting the pinion on the drum shaft with one of the gears on the rolls, there being one connecting gear for each set of iblls; a pusher disposed between each set of interfolding rolls; and a gear on each pusher, connected with one of the equal dimension 'gears which operate the interfolding rolls.

31. A sheet interfolding instrumentality comprising a4 fixed shaft; a pinion on the shaft; a drum rotatably mounted on the shaft; a plurality of coacting interfolding rolls, arranged in pairs around the drum; gearing connecting the rolls of each pair; a plurality ofgears of equal dimensions connecting the pinion on the drum shaft with' one of the gears on the rolls, there being one'connecting gear for each set of rolls; said drum comprising' end sections mounted on the shaft; mounting for the through which the rolls are adair ted to operable; a pinion.

rolls disposed. on Y' the end sections; and a 'cylindrical body portion connecting the end sections.

32.'A sheet interfolding instrumentality comprising a fixed shaft; a. pinion on the shaft; a drum rotatably mounted on the shaft; a plurality of ooacting interfclding rolls, arranged in pairs around the drum; gearing connecting the rolls of each pair; a plurality of gears of equal` dimensions connecting the pinion on the drum shaft with one of the gears on the rolls, therebei connecting gear for each set of rf drum comprising end sections m the shaft; mounting for the re" on the end sections; and a cyli portion. connecting the end ions; said body portion being provided with openings 33. A sheet interfolding machine comprising a frame; a plurality of drum-supporting shafts mounted thereon; a drum rotatably mounted on each shaft; each drum having' mounted thereon, in alternate arrangement, .a pair of pinch rolls and a pusher; a pinion on each drum shaft; a gear .on each pusher; i gearing connectii the roiis of each set of pinch rolls; ant. t nears of equal ratio conmeeting the pinion on each drum shaft With one of the gears on the pinch rolls and With the pusher; a main drive from a source of power; and a driving connection between the main drive and one of the drums.

34. A sheet interfolding machine compris- 10ft ing a frame; a plurality of drum-supporting shafts mounted thereon; a drum rotatably mounted on each shaft; each drum having mounted thereon, in alternate arrangement, a pair of pinch rolls and a pusher; a pinion on each drum shaft; a gear on each pusher; gearing connecting the rolls of eafch set of pinch rolls; and gears of equal ratio connecting the pinion on each drum shaft with one of the gears on the pinch rolls and with the pusher; a main drive from a source ofpower; a driving connection between the main drive and one of the drums; an instrumentality includingr feed rolls forfeeding a web of material to the drums; and a driving connection between the feed rolls and the main drive.

35. A sheet interfolding machine comprising a frame; a plurality of drum-supporting shafts mounted thereon; a vdrum rotatably mounted on eaclr shaft; each' drum having mounted thereon, in alternate arrangement, a pair of pinch rolls and a pusher; a pinion on cach drum shaft; a gear on each pusher; gearing connecting the rolls of each set of pinch rolls; and gears of equal ratio'eonnecting the pinion on each drum shaft with one of. the gears on the pinch rolls and with the pusher; a main drive from a source of power: a driving connection between the main drive and oneI of the drums; an instrumentality including t'eed rolls for feeding a web of material to the drums; a driving connection between the feed rolls and the main drive; and a cutting instrumentality disposed between the feed rolls and drums.

36. A sheet interfolding machine comprising a trame; a plurality of drum-slipporting shafts mounted thereon; a drum rotatably mounted on each shaft: each drum having mounted thereon. in alternate arangement, a pair of pinch rolls and apusher; a pinion on each drum shaft; a gear on each pusher;

gearing connecting the rolls ot' each set ot pinch rolls; and gears ot equal ratio connecting the pinion on eachdrum shat't with one of the gears on the pinch rolls and -with the pusher; a main drive from a source of power; a driving connection 'between the main drive and one of the drums; an instrumentality including feed rolls for feeding-a web of material to the drums; a driving connection between the feed rolls and the main drive; a cutting instrumentality disposed between the feed rolls and drums; said cutting instrumentality including a fixed cutter; rotating cutters arranged to cooperate with the fixed cutter; and a driving connection between the rotating cutt' rs and the main drive.

37. A sheet interfolding machine comprising a frame; a plurality ot drum-supporting shafts mounted thereon; a drum rotatably mounted on each shaft; each drum having mounted thereon, in'alt'ernate arrangement, a pair ot' pinch rolls and a pusher; a pinion on each drum shaft; a gear on each pusher; gearing connecting the rolls of each set of pinch rolls; and gears ot' equal ratio connecting the pinion on each drum shaft with one of the gears on the pinch rolls and with the pusher: a main drive from a source ot power: a driving connection between the 'main drive and one of the drums: an instrumentality including 't'eed rolls for feeding a web ot' material to the drums; a driving connection between the feed rolls and the main drive; a cutting instrumentality disposed between the. feed rolls and drums; said cutting instrtnnentality including a fixed cutter; rotating cutters arranged to cooperate with the xed cutter; a driving connection between the rotating-cutters and the main drive; the rotating cutters being arranged to alternately coact with the fixed cutter. whereby a double web lna'y be cut while being fedto the drums, one edge of a cut sheet being disposed between the end edges of the next succeeding sheet.

38. A sheet interfolding machine comprising a frame; a. plurality'ot' drum-supporting shafts mounted thereon.; a drum rotatably mounted on each shaft: each drum having mounted thereon, 1u alternate arrangement, a pan.' ot'pmch rolls and a pusher; a pinion on each drum sha ft; a gear on each pusher; i

gearing connecting the rolls ot' eachl set ole pinch rolls: and gears of equal ratio connecting the pinion ou each drum shaft with one ot the gears on the pinch rolls and with the pusher; a main drive from a source ot' power; a driving' connection .between the main drive and one ot the drums; an instrumentality including t'eed rolls for feeding a web ol" material to the drums; a driving connection between the feed rolls and the main drive: a cutting instrumentality disposed between the feed rolls and drums; said cutting' instrumentality including a tixed cutter; rotating cutters arranged to cooprrate with. the fixed cutter; a driving connection between the rotating cutters and the main drive; therota-ting cutters being arranged to alternately coact With the fixed cutter,

whereby a double webv may be cut while being ted to the drums, one edge ot' a cut sheet being' disposed between the end edges ot the next succeeding sheet, and the pusher on one drum being arranged to torce thev end edge' of a cut sheet and a central portion of the .next succeeding sheet into the bight of the pinch rolls 'on the other drum at a predetermined point in their rotation.

39. A sheet, interfolding machine comprising a trame; a plurality of drum-supporting shafts mounted thereon; a drum rotatably mounted on each shaft; each drinn having mounted thereon, in alternate arrangement,

a pair of pinch rolls and aV pusher; a pinion on each drum shaft; a gear on each pusher:

gearing' connecting the rolls of each set of pinch rolls; and gears of equal ratio connecting the pinion on each drum shaft with one of the gears on the pinch rolls and with the pusher; a main drive from a source oi power; and a driving connection between the main drive and one ot the drums; said` pinch rolls having coacting pinching surfaces disposed thereon and arranged to be operated by the gearing to maintain one surface always in predetermined lixed position while the drum rotates around its supporting shaft.

4t). A sheet intert'olding machine comprising a trame; a plurality ot drum-supporting Shafts mounted thereon; a drum rotatably mounted on each shaft; each drum having mounted thereon, in alternatearrang-ment, a pair of pinch rolls and a pusher;

a pinion on each drum shaft; a gear on each pusher; Gearing connecting the rolls ot' eac-h set of pinch rolls; and gears'of equal ratio connecting the pinion on each drum shaft with one'of the gears on the pinch rolls and with the pusher; a main drive from a source of power;v and a driving connection between the' main drive and oneof thoidrums; said pinch rollsmi-,having coactng pinching surfaces disposed the'reonand apranged to be operated b v the gearing tomuntain one 'LCI fle

porting shafts mounted vporting shafts mounted thereon;

si rface always in predetermined fixed position while the drum rotates around its supporting shaft, the other' pinching surface being arranged to rotate with relation to the Iixed surface and coact with the fixed surface at a predetermined point during the rotation of the drums. 41. A; sheet interfolding machine comprising` a. frame; a` plurality of drum-supporting Shafts mounted thereon; a drum rotatably mounted on each shaft; each drum having mounted thereon, in alternate arrangement, a pair of pinch rolls and a pusher; a pinion on each drum shaft; a gear on each pusher; gearing connecting the rolls of each set of pinch rolls; and gears of equal ratio connecting the pinion on each drum shaft with one of the gears on t-he pinch rolls and with the pusher; a main drive from a source of power; and a driving connection between the main drive and one of the drums; said pinch rolls having coaeting pinching surfaces disposed thereon and arrangedto be operated by the gearing to maintain one surface always in predetermined fixed position while the drum rotates around its supporting shaft, the other pinching surface being infrange/d to rotate with relation to the fixed surface and coact with the fixedA surtace at a predetermined point during the roi' ation of the drums, and the pusher on the other drum being arranged to coact with the pinch rolls at the point where these pinching .surfaces come together.

42f A sheet interfolding machine comprising a frame; a plurality of drum-supthereon; a drum rotatably mounted on each shaft; each drum having mounted thereon, in alternate arrangement, a pair of pinch rolls and a pusher; a pinion" on each drum shaft; a gear on each pusher; gearing connecting the rolls of each set of pinch rolls; and gears of eq'ual ratio connecting thel pinion on ear-h drum shaft with one of the gears on the pinch rolls and with the pusher; a main drive from a source of power; and a driving connection between the main drive and one of the drums; .said pinch rolls having coacting pinching surfaces disposed thereon and arranged to'be operated by the gearing to maintain one surface always in predetermined Iixed position while the drum rotates around its supporting shaft, the other pinching surface being arranged to rotate with relation to the fixed surface and 'fonct with the fixed f-:urface at a predetermined point during the rotation of the drums; said pinching surfaces'lwing arranged to separate at a point approximately sixty degrees beyond their point of contact to release material acted upon.

4S. A sheet inter-folding machine comprising a frame; a plurality of drum-supa drum rotatably mounted on each shaft; each drum having mounted thereon, in alternate arrangement, a pair of pinch rolls and a pusher; a pinion on each drum shaft; a gear on each pusher; gearing connecting the rolls of each set of pinch rolls; and gears of equal ratio connecting the pinion on each drum shaft with one of the gears on the pinch rolls and with the pusher; a main drive from a source of power; a driving connection between the main drive and one of the drums; an instrumentality including feed rolls for feeding a web of material to the dru1ns;.a driving connection betweenthe feed rolls and the main drive; a cutting instrumentality disposed between the feed rolls and drums; said cutting instrumentality including a fixed cutter; rotating cutters arranged to cooperate with the fixed cutter; a driving connection between the rotating cutters and the main drive; the rotating cutters being arranged to alternately coact with the fixed cutter, whereby a double web maybe cut while being fed tothe drums, one edge of a cut sheet being dis.- posed between the end edges of the next succeeding sheet, and the pusher on one drum being arranged to force the end edge of a cut sheet and a central portion of the next succeeding sheet into the bight of the pinch rolls on the other drum at a predetermined pointv in their rotation; and means for removing the interfolded sheets from the drums; said means including a guideway; a conveyor operatively associated therewith, and means for driving the conveyor.

44. A sheet interfolding machine cornprising porting shafts mounted thereon; a drum rotatably mounted on each shaft; each drum having mounted thereon, in alternate a1'- rangement, a pair of pinch rolls and a pusher; a pinion on each drum shaft; a gear on each pusher; gearing connecting the rolls of each set of pinch rolls; and gears of equal -ratio connecting the pinion on each drum shaft with one of the gears on the pinch rolls and with the pusher; a main drive from a source of power; a driving connection between the main drive and one of the drums; and a drivingl connection between the drums whereby they are driven in synchronism.

45. A sheet interfolding mechanism including rotatable drums; sheet folding rolls and a pusher disposed in alternate arrangement on each drum; means for eecting coaction between a pusher on one drum and the folding rolls on another drum at a predetermined point during the rotation of the drums; means for maintaining the pushers in their coacting position, unchanged during rotation of the drums; and means for effecting a rotation of one folding roll with relation to the other of the pair while a frame; a plurality of drum-supllO maintaining the other roll ,in the position it occupies at coaction withfthe pusher, unchanged during rotation ofthe drum. +16. In an interfolding machine, a pluralliyioffroll-carrying drums, clamping rollers oneuch ofthe drums and bodily movable thereon in a direction having a lateral component, a plurality vof tucker devices on each drum and longitudinally arranged thereon with respect to each pair of rollers thereon, and means common to the rollers ind tucker devices on each drum for simultaneously rotating said rollers continuously `in a direction adapted to draw material therebetween and to maintain the tucker devices in a predetermined relation thereto.

47. In an interfolding machine, a plurality of roll-carryingdrums, clamping rollers on each of the drums and bodily movable thereon in a direction having a lateral ,component, a plurality of tucker devices on each drum and longitudinally arranged thereon with respect to each pair of rollers thereon, means common to the rollers'and tucker devices on each drum for 'simultaneously rotating said rollers continuously in a direction adapted to draw material therebetween and to maintain the tucker devicesA in a predetermined relation thereto, and means associated with the rollers for releasing such material from between the same at a predetermined point in the bodily movement thereof.

48. In an interfolding'machine, a plurality of roll-carrying drums, a plurality of pairs of clamping rollers on each of the drums and bodily movable thereon in a direction having a laterial component, a plurality of tucker devices on each drum and longitudinally arranged thereon with respect to each pair of rollers thereon, ich tucker device on each drum'having rotation therein, and means common to the rollers and tucker devices on each drum for simultaneously rotating the rollers continuously in a direction adapted to draw material thi. @between and to maintain the tucker lei :fes in a predetermined relation thereto.

49. fn an interfolding machine7 a plurality of roll-carrying drums, a plurality of pairs of clamping rollers on each of the drums and bodily movable thereon in a directionhavinga lateral component, a plurality of tucker devices on each drum and longitudinally arranged thereon with respect to each pair of rollers thereon, veach tucker device on each drum having rotation ytherein, means common to the rollers and tucker devices on each drum for simultaneously rotating the rollers continuouslyin a direction adapted to draw material therebetween and to maintain the tucker devices in a predetermined relation thereto, and means associated with the rollers for releasing such material-from between the same at a predetermined point in the bodily movement thereof.

50. A sheet interfolding machine'including a drum; a folding instrumentality arranged upon the drum comprising a pair of pinch-rolls and yieldingly cooperating pinch-bars on the respective pinch-rolls.

5l. A sheet interfolding machine including a drum; a folding instrumentality arranged upon the drum comprising a pair of pinch-rolls and yieldinglyA cooperating pinch-bars on the respective pinch-rolls; and a pusher-element disposed upon the drum.

52. A sheet interfolding machine comprisying a plurality of coacting carriers, each carrier being rotatable and having thereon a plurality of sets of folding devices, each set comprising movable sheet-engaging-elements, and pushers in alternate arrangement therewith; one of the folding-elements being movable in timed relation to the other element and to a coacting pusher during each revolution of the carrier which carries it, and means for rotating the carriers whereby one of the pushers on one of the carriers will coact with one of the sets of folding elements on the other carrier, these members being brought into operative relationship by rotation of the carriers.

53. A sheet interfolding machine comprising a plurality of coacting carriers, each carrier being rotatable and having thereon a pluralityof sets of folding devices, each set compgising sheet-engaging-elements, and pushers in alternate arrangement therewith; one of the folding elements having rotative movement in -respect to the other element to effect a pinching action thereon during each revolution ofthe carrier lwhich carries it; and means for rotating the carriers whereby one of the pushers on one of the carriers will coact with one of the sets of folding elements on the other carrier, these members being brought into operative relationship by rotation of the carriers.

In testimony whereof we ali-ix our signatures.

WILLIAM H. CANNARD. GLENN A. SHAFFER. 

